The concept is cool, the design is not. Instant box filler. Someone said it looks like a Yo-kai watch and they're right.
So gimmighoul is actually colleclay in Japanese and that name makes wayyyy more sense, because it’s literally a piece of clay that is possessed by a ghost lol They also describe the roaming form as being a different personality from the regular treasure form. I don’t think that means it’s evolution will be different but interesting.